Apparatus for determining fluid pressure



1943. B. M. l KERT 2,326,652

APPARATUS FOR DETERMINING FLUID PRESSURE Filed D60. 4, 1959 U N k\\\\\\\\\\\\\\\ I E F 1 a Q Q Q v a N w c 'u' H 1 lllllulnll v 'im' Q I Z Z/671$? Wi l BRUNO M..IKELF?T Patented Aug.10,1943 1.

APPARATUS FOR DETERMINING rnnssnnn FLUID rune M. Ikert; Elgin, in, assignor to-W'arnr- Patterson Company, Chicago, Ill, a corporation of Illinois Application llecen ber', massa e. 307.43%;

1 Claim. "(0113-31) This invention relates to an apparatus for determining fiuidpressure and its primary object' is the provision tr new and simple means adapted for application to a part of an automobile for determining quickly and easily the pressure in the gasoline feed line of. an automobile.

A further object of the invention is the provision of a removable disconnectable element in the form of a cup or vessel whichis adapted to be applied interchangeably for the sediment bowl or cup in a gasoline line, the said cup or vessel bein adapted to be removably supported in position on the gasoline motor or'housing that the gasoline strainer occupies, there being a provision for the attachment to the vessel or cup of a pressure gauge so that the pressure required to draw the gasoline from the tank to the pump will be measured.

A still further objector the invention is the provision of new and novel means which .is.

adapted to be appliedto a part of an automobile in a position forwardly of the point where the gasoline line passes through the pump. to the carbureter so asto determine by relative pressure whether or not there exists a clog in the gasoline feed line.

i Numerous other objects and advantages will be I apparent throughout the progress of the, follow- Fig. 3 is a detail sectional view showing the invention applied in position.

The apparatus for determining the fluid pressure in the feed line from-the gasoline tank to the gasoline motor is adapted to include an element in the form of a cup or other vessel for replacing the conventional cup In now employed on innumerable combustion motors.

In devices which are propelled by an internal combustion motor such as an automobile l I which is shown herein for. the. purpose of illustrating the invention, there exists a gasoline line l2 which runs from the gasoline tank or other source of supply 13 to the gasoline pump 14, the

pump l4 draws thegasoline from the tank [3 through the gas pipeline 1 2 and forces it through the carbureter where in'turn it isfedor carburetted to the engine Hi. -It has been found desirable to place the cup mat apointahead of the gasoline pump M sothat anysediment which may be in the, gasoline will be deposited inthe cup). 7 V v V n The cups mare generally made of glass. so that it can be seen readily whether or notthere is .sediment deposited and if so the cup can be cleaned quickly. The cup in is, therefore made of the cuplli is smooth and flat as indicated at [I and seats against a cooperating surface I 8 which ma be a part of thegasoline pump-or another part of the motor to which-the pump is attached.

A gasket l9 may be inserted between the :upper rim ll of the cup and its co-operatingsurface l8 so as to insure a fluid tight connection. The-cup ill islocked tightly in position by means of a set screw 25 which passes'through the metal strap l6 and engages the bottom of the cup-so thatwhen the screw 25) is screwed inwardly, it will press the seats ll and lfi tightly' together; ilfudesired a to lock the'cup in which is drawn from thecup Illthrough the extremely difficult to determine whether the gasoline feed line is functioning properly and very often the owner is put to the expense of 'blowing out the feed lines when in fact the feed lines are clean.

The'invention therefore'contemplates the prov 7' vision of means for easily and quickly testing feed lines todetermine whether ornot they are clogged. The means for determining whether or not there exists any clog in the line comprises a cup 25 which is preferably made of metal and which is adapted to be constructed in exact accordance with the dimensions of the cup lfl'so that during the testing operation it can be applied in place of the cup Ill. The cup 25, there The cup 25 is provided with a nipple 26' extend ing from a side thereof, there being a passagell in the nipple communicating with the interior of the cup 25. A flexible pipe line such as a rubber tube 28 is adapted to be fastened about the nipple 2G and leads to a gauge or other indicator 29 so as to determine the vacuum or pressure in the cup 25. The indicator 2!! is providedwith a graduated scale 30, the scale designating millimeter of mercury so that the vacuum inthe F QPQQ be de erm ned r adi y ndrinstantlra e t s per e w h a po nters? he indi a in ea s c is ad ed to be moved ina clockwise direction depending on the amount of vacuum existing in the cup 25. The Pai e l c t r 5! m e r e b a conventional means such as by a Bourdon tube which is adapted to coil and uncoil depending on the amount of" pressure" or vacuun'n The Bourdon tube, therefore, controls the operation of the indicating hand 3|. .Iherefore, as the indicator hand 3;l moves to a predetermined position, it is known whether or not there is a clog in the line because the arnount o f pressure re j sau y.-

screw 20 is sufiiciently loosened so that the cup Hl may be removed. The cup 25 is then placed in the position where the cup I0 was applied and the set screw is tightened to lock the cup 25 in position. The tube 28 is then fastened to the nipple and to the gauge 29 and the motor is started. The pressure or suction in the line 12 will be the same in the line 28. Therefore, if the pointer 3| moves to a position beyond that which should normally occupy when the suction in the lin i normal, it is indicated definitely that greater suction is required to suck the gasoline from the tank l3 than is needed under normal conditions. it is therefore indicated that there is an obstruction in the line [2.

The cup Ill may be quickly and instantly removed and the cup 25 may be quickly and instantly replaced for the cup 10. Therefore, whether or not there exist an obstruction in the line l2 can be determined readily and in- Theinvention provides small, compact, efiici e nt ly operated mechanism including an :lement which may be substituted temporarily for a normal operating part of the structure.

- ly fall within the scope of the following claim.

quired to draw the gasoline from thetank to the cup is considerably more than is usually required.

Therefore, it is indicated definitely that there is a--c l0g or other obstruction in the feed line I 2.

' The invention comprises a gauge provided with graduations indicative of certain millimeters of mercury pressure or vacuum with an indicating hand adapted to be moved by pressure or vacuum so' that the amount of vacuum or pressure may be read. The gauge 29 is adapted to have connected thereto a tube or pipe 23 which is discon nec'tedly fastened to the nipple 26 The nipple 26 is preferablyformed as an integral part of the cup 25,:the cup 25 being adapted to temporarily replace the cup 'IB'du'ring the test of the feed line.

To test the feed line in order to determine whether or not the fee'd line is closged'the set The invention is hereby claimed:

In testing apparatus for determining if there is a clog in the fuel line of an internal combustion engine having a fuel pump and afsediment cup removably fastened to a fixture connected in the fuel line by connecting a pressure gauge to the fuel line adjacent th fuel u p, means for connecting said gauge to said fuel line comprising a cup-shaped receptacle constructed to be substituted for said sediment cup, means on said receptacle adapted to cooperate with means on said fixture detachably to connect said receptacle to said fixture in placeof said sediment Cup,- a wall of said cup-shaped receptacle having an opening communicating with the'interior of re t c d a P es u gauge commun eating with the opening in said receptacle, where- V BREINQ M: IKE-RT 

